Improvement in spark-arresters



A. J. HOAG. Spark-Arresters.

No. 212,002. Patented :Feb. 4,1879.

ATTORNEY,

PETERS, FHOTO-LITHOGRAPHEI'R, WASMNGTON. D C. V

UNITED STATES PATENT FFIGE.

ANDREW J. HOAG, OF BATTLE GREEK, MICHIGAN.

lMPROVEMENT IN SPARK-ARRESTERS.

Specification forming part of Letters Patent No. 212,002, dated February4, 1879; application filed December 17 1878.

To all whom it may concern Be it known that I, ANDREW J. HOAG, of BattleCreek, county of Calhoun, State of Michigan, have invented certain newand useful Improvements in Spark-Arresters, of which the following is afull, clear, and exact description, reference being had to theaccompanying drawing, which represents a vertical section through thebonnet and a portion of the smoke-stack, showing my improvements.

My invention consists in a novel construction and arrangement of flangedpartitionplate or deflector, having a central opening, in connectionwith the bonnet and an inverted cone suspended therefrom, and forming acondensed-steam reservoir or dish, into which the larger cinders arethrown or deflected by the flanged partition, and thus extinguished.

It further consists in combining the perforated and flanged deflectorand the cone connected therewith with a hinged hood or bonnet, wherebythe cone is adapted to be tilted or dumped for dischargingits contents,as hereinafter explained.

In the accompanying drawing, A represents the smoke-stack, and B B thehood or bonnet, the latter made in the usual form of two frustums ofcones, united at their bases. The bonnet thus formed is provided on itslower end, at one side, with pendent perforated'lugs or cars a, adaptingit to be hinged or pivoted to corresponding lugs or cars on thesmoke-stack.

The upper part or frustum, B, of the bounet, above its point of junctionwith the lower part, B, is provided with a horizontal partition-plate ordeflector, 0, having a large central opening, D, through it for theescape of the smoke and exhaust-steam.

The edge of the plate 0 surrounding the central opening is bentdownward, forming an inclined or curved pendent flange, 0, annular inform, and inclining inward in such manner as to form an oblique anglewith the disk or partition-plate O.

E is an inverted cone or conical dish, suspended by rods or straps efrom the flange (J or plate 0, with the flange or ring 0 overhanging itsopen upper end,butwith suflicient space between them for the readypassage of the smoke, cinders, &c.

It will be seen that by the arrangement of parts above described thesmoke, cinders, and exhaust-steam escaping from the smoke-stack will bedeflected outward by the cone, and the smoke, steam, and lighterparticles of cinders will thence follow readily the direction of escapebetween the upper end of the cone and the flange O, and thence upthrough the opening D and out, while theheavier portions of cinders,unable to follow the abrupt turns or movements of the smoke andeXhauststeam, will be thrown up against the plate (3 and flange O, andtheir progress being thus retarded, they will be deflected, and drop orbe thrown into the conical dish E, together with the exhaust'steamcondensed in its passage and dropping into the dish, and which serveseffectually to extinguish the cinders.

By settingthe plate 0 above the junction of the two parts of the bonnetthe cinders, &c., coming in contact with the inwardly-inclined walls ofthe upper part, will be deflected -in- Ward, and, coming in contact withthe inwardly and downwardly inclined flange C, will be thereby throwninto the dish E and extinguished.

By making the cone E and its supports separate from the smoke-stack, andhinging the bonnet to the'stack, as described, the cone can be readilydumped whenever it becomes filled by simply turning the bonnet over onits hinge.

Having now described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. The flat deflecting-plate or partition 0, attached above the junctionof the two parts B B of the bonnet, and provided with the pendent flangearound the central opening, and with pendent supports for the conicaldish E, applied to and operating in combination with the bonnet,substantially as described.

2. The cone or dish E, suspended from the flanged centrally-perforatedplate 0, in combination with the hinged bonnet, arranged and operatingsubstantially as described.

ANDREYV J. HOAG.

Witnesses:

F. '1. ROBERTS, E. O. NrcHoLs.

